SQL DONE

SQL.BuildAndDestroy.iml

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+<?xml version="1.0" encoding="UTF-8"?>
+<module type="WEB_MODULE" version="4">
+  <component name="NewModuleRootManager" inherit-compiler-output="true">
+    <exclude-output />
+    <content url="file://$MODULE_DIR$" />
+    <orderEntry type="inheritedJdk" />
+    <orderEntry type="sourceFolder" forTests="false" />
+  </component>
+</module>

answers/exercise1.sql

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+mysql> show databases;
++--------------mysql> show databases;
++--------------------+
+| Database           |
++--------------------+
+| information_schema |
+| myNewDB            |
+| mysql              |
+| performance_schema |
+| sys                |
+| zipcode            |
++--------------------+
+6 rows in set (0.06 sec)
+

answers/exercise10.sql

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+mysql> Select * From Students where City != 'Philadelphia';
++-------------+--------------------+-------------+------------+------------+
+| StudentName | Address            | City        | PostalCode | Country    |
++-------------+--------------------+-------------+------------+------------+
+| Jane Doe    | 57 Union St        | Glasgow     | G13RB      | Scotland   |
+| Gucci Mane  | East Atlanta Santa | Atlanta     | 30309      | Georgia    |
+| Karrauche   | Calabases Way      | Los Angeles | 90018      | California |
+| Asap Rocky  | East 112th Street  | Manhantan   | 10001      | New York   |
++-------------+--------------------+-------------+------------+------------+
+4 rows in set (0.00 sec)

answers/exercise11.sql

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+mysql> Select * from Students order by City asc;
++-------------+--------------------+--------------+------------+--------------+
+| StudentName | Address            | City         | PostalCode | Country      |
++-------------+--------------------+--------------+------------+--------------+
+| Gucci Mane  | East Atlanta Santa | Atlanta      | 30309      | Georgia      |
+| Jane Doe    | 57 Union St        | Glasgow      | G13RB      | Scotland     |
+| Karrauche   | Calabases Way      | Los Angeles  | 90018      | California   |
+| Asap Rocky  | East 112th Street  | Manhantan    | 10001      | New York     |
+| Meek Mill   | South Street       | Philadelphia | 19138      | Pennslyvania |
++-------------+--------------------+--------------+------------+--------------+
+5 rows in set (0.00 sec)

answers/exercise12.sql

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+mysql> Select * from Students order by City desc;
++-------------+--------------------+--------------+------------+--------------+
+| StudentName | Address            | City         | PostalCode | Country      |
++-------------+--------------------+--------------+------------+--------------+
+| Meek Mill   | South Street       | Philadelphia | 19138      | Pennslyvania |
+| Asap Rocky  | East 112th Street  | Manhantan    | 10001      | New York     |
+| Karrauche   | Calabases Way      | Los Angeles  | 90018      | California   |
+| Jane Doe    | 57 Union St        | Glasgow      | G13RB      | Scotland     |
+| Gucci Mane  | East Atlanta Santa | Atlanta      | 30309      | Georgia      |
++-------------+--------------------+--------------+------------+--------------+
+5 rows in set (0.00 sec)

answers/exercise13.sql

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+mysql> Select * from Students order by Country asc;
++-------------+--------------------+--------------+------------+--------------+
+| StudentName | Address            | City         | PostalCode | Country      |
++-------------+--------------------+--------------+------------+--------------+
+| Karrauche   | Calabases Way      | Los Angeles  | 90018      | California   |
+| Gucci Mane  | East Atlanta Santa | Atlanta      | 30309      | Georgia      |
+| Asap Rocky  | East 112th Street  | Manhantan    | 10001      | New York     |
+| Meek Mill   | South Street       | Philadelphia | 19138      | Pennslyvania |
+| Jane Doe    | 57 Union St        | Glasgow      | G13RB      | Scotland     |
++-------------+--------------------+--------------+------------+--------------+
+5 rows in set (0.00 sec)
+

answers/exercise14.sql

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+
+mysql> Select * from Students where PostalCode = null;
+Empty set (0.00 sec)
+

answers/exercise15.sql

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+mysql> Select * from Students;
++-------------+--------------------+--------------+------------+--------------+
+| StudentName | Address            | City         | PostalCode | Country      |
++-------------+--------------------+--------------+------------+--------------+
+| Jane Doe    | 57 Union St        | Glasgow      | G13RB      | Scotland     |
+| Gucci Mane  | East Atlanta Santa | Atlanta      | 30309      | Georgia      |
+| Karrauche   | Calabases Way      | Los Angeles  | 90018      | California   |
+| Asap Rocky  | East 112th Street  | Manhantan    | 10001      | New York     |
+| Meek Mill   | South Street       | Philadelphia | 19138      | Pennslyvania |
++-------------+--------------------+--------------+------------+--------------+
+5 rows in set (0.00 sec)

answers/exercise16.sql

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+mysql> Update Students Set City = 'Edinburgh';
+Query OK, 5 rows affected (0.00 sec)
+Rows matched: 5  Changed: 5  Warnings: 0

answers/exercise17.sql

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+mysql> Update Students Set City = 'edinburgh' where Country = 'Scotland';
+Query OK, 1 row affected (0.00 sec)
+Rows matched: 1  Changed: 1  Warnings: 0

answers/exercise2.sql

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+mysql> show databases;
++--------------------+
+| Database           |
++--------------------+
+| information_schema |
+| mysql              |
+| performance_schema |
+| sys                |
+| zipcode            |
++--------------------+
+5 rows in set (0.00 sec)

answers/exercise3.sql

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+mysql> use myNewDB
+Database changed
+Create table Users(UserID INTEGER PRIMARY KEY NOT NULL AUTO_INCREMENT, LastName VARCHAR(255), FirstName VARCHAR(255), Address VARCHAR(255), City VARCHAR(255));Query OK, 0 rows affected (0.02 sec)
+

answers/exercise4.sql

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+drop table Users;
+Query OK, 0 rows affected (0.01 sec)
+

answers/exercise5.sql

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+mysql> truncate table Users;
+Query OK, 0 rows affected (0.01 sec)

answers/exercise6.sql

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+mysql> Alter Table Users Add column Birthday DATE;
+Query OK, 0 rows affected (0.03 sec)
+Records: 0  Duplicates: 0  Warnings: 0
+
+
+
+mysql> describe Users;
++-----------+--------------+------+-----+---------+----------------+
+| Field     | Type         | Null | Key | Default | Extra          |
++-----------+--------------+------+-----+---------+----------------+
+| UserID    | int          | NO   | PRI | NULL    | auto_increment |
+| LastName  | varchar(255) | YES  |     | NULL    |                |
+| FirstName | varchar(255) | YES  |     | NULL    |                |
+| Address   | varchar(255) | YES  |     | NULL    |                |
+| City      | varchar(255) | YES  |     | NULL    |                |
+| Birthday  | date         | YES  |     | NULL    |                |
++-----------+--------------+------+-----+---------+----------------+
+6 rows in set (0.00 sec)
+

answers/exercise7.sql

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+mysql> Alter table Users drop column Birthday;
+Query OK, 0 rows affected (0.02 sec)
+Records: 0  Duplicates: 0  Warnings: 0

answers/exercise8.sql

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+mysql> Insert into Students (StudentName, Address, City, PostalCode, Country) Values ('Jane Doe', '57 Union St', 'Glasgow', 'G13RB', 'Scotland');
+Query OK, 1 row affected (0.00 sec)
+
+mysql>
+

answers/exercise9.sql

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+mysql> Select City from Students where NOT 'Philadelphia';
++---------+
+| City    |
++---------+
+| Glasgow |
++---------+
+1 row in set, 1 warning (0.00 sec)
+